From 47e547b321338c73c21fa623789f1efbd80a297a Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Tue, 24 May 2016 15:09:29 +0200 Subject: lavc: add a null bitstream filter It is useful for testing/debugging and will also be used as the default filter in the following commit adding pre-decode filtering to avoid having a separate non-filtered codepath. --- libavcodec/null_bsf.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 libavcodec/null_bsf.c (limited to 'libavcodec/null_bsf.c') diff --git a/libavcodec/null_bsf.c b/libavcodec/null_bsf.c new file mode 100644 index 0000000000..0fe4f3529f --- /dev/null +++ b/libavcodec/null_bsf.c @@ -0,0 +1,43 @@ +/* + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Null bitstream filter -- pass the input through unchanged. + */ + +#include "avcodec.h" +#include "bsf.h" + +static int null_filter(AVBSFContext *ctx, AVPacket *out) +{ + AVPacket *in; + int ret; + + ret = ff_bsf_get_packet(ctx, &in); + if (ret < 0) + return ret; + av_packet_move_ref(out, in); + av_packet_free(&in); + return 0; +} + +const AVBitStreamFilter ff_null_bsf = { + .name = "null", + .filter = null_filter, +}; -- cgit v1.2.3